Sole-trimming machine



(No Model.)

A. F. SMITH.

SOLE TRIMMING MACHINE.

No. 325,703. Patented Sept. 8, 1885.

WHLHESSES W6: PM

UNITED STATES PAT NT SOLE-TRIMMING MACHINE.

SPECIFICATION forming part of Letters Patent No. 325,703, dated September 8, 1885.

Application filed December 24, 1884.

To all whom it may concern.-

Be it known that I, AARON F. SMITH, of Lynn, in the county of Essex and Commonwealth of Massachusetts, have invented certain Improvements in Trimming-Machines, of which the following, taken in connection with the accompanying drawings, is a specification.

This invention relates to machines for trimming the sole-edges of boots and shoes, and has for its object to provide means to assist the workman in guiding the work to the tool, and to gage the amount of projection to be left on the edge of the trimmed sole.

The nature of the invention is hereinafter fully described ,and specifically pointed out in the claim.

This invention is applicable to the ordinary rotary trimming-machines now in common use, and in the accompanying drawingsl have represented only so much of the machine as is necessary to illustrate the combination and operation of my invention in connection therewith.

Figure 1 is a perspective view of the trimmer-tool of an ordinary trimming-machine and my improved gage attached thereto, and in the operation of trimming the sole-edge of a boot. Fig. 2 is a longitudinal vertical section of the parts shown in Fig. 1, while Fig. 3 is a perspective end view of the same parts, except the screw or pin a. 1

The cutter A, the driving-shaft B, and the other parts (not shown) of the machine proper are of the usual and ordinary construction. They are well known to those skilled in the art to which they pertain, and will not therefore be particularly described in this specification. The gage Dis provided with a hole, 6, through which is passed the screw a, as in Fig. 2. Said screw operates to keep the gage D in connection with the cutter A, and further serves to keep the cutter A secured to the driving-shaft B and to this end the screw is arranged to screw into the end of the driving-shaft, and is further provided with a shoulder, f, between which and a suitable shoulder on the drivingshaft the cutter A is securely clamped, thus compelling it to rotate with the shaft. The gage D is made with a hole, 6, as before stated,

(No model.)

and this hole is eccentric to the gage, and is the opening through which the screw a is made to pass; butsaid screwis made to pass through the center of the cutter A. The gage is arranged to turn loosely on the shank of the screw, and may be held and prevented from turning by the bell-crank lever H, the end whereof is adapted to pass into suitable holes or cavities in the face of the gage. The spring K operates to force and retain the end of said lever into said holes.

In operating this machine the workman holds the shoe in his hands and presses it against the cutter, as illustrated in Fig. 1, for the purpose of trimming the sole-edge. The gage D has its edge-surfacesmoothly finished, and is allowed to bear against the edge of the inner sole, (through the upper always,) and is made large enough to extend as much past the edge of the cutter as it is desired the finished sole shall project outward from the line of the inner sole and upper. The workman may then press the shoe to the cutter till the gage bears on the edge of the inner sole, as stated, and turn theshoe in the usual way, always keeping the gage bearing on the inner sole, as described. The edge of the finished sole, when trimmed in this way, will always have an even extension all the way round conforming to the edge of the inner sole, and the sole may be trimmed in this way much easier and more uniformly than has been heretofore done.

It is customary to allow the edge of the sole to project to a greater or less extent, according to the style and kind of shoe desired, and to this end the gage D is made so as to permit of adjustment to suit the kind of work desired. Said adjustment is obtained by making the gage circular in form, and making the hole 6 eccentric thereto, so that by simply turning the gage on its} supporting-pin a the distance between the plane of the gage and the face of the cutter (at the point or line of their contact with the work) may be varied to leave any desired amount of edge projection to the sole, as stated. The desired arrangement of the gage having been obtained relatively to the cutter, it may be locked in this position by the lever H, as before described.

I claim In a machine for trimming the edges of boot be adjusted and held after such adjustment in and shoe soles, the combination of a rotary fixed relation to the trimmer, substantially as edge-trimmer, a circular edgegage fixed ec described.

centrically to the trimmer-head, recesses in AARON F. SMITH. 5 the face of said gage, and a locking mechan- Witnesses:

ism, substantially as described, adapted to en- O. B. TUTTLE,

gage therewith, whereby the said gage may G. O. TUTTLE. 

